UNI-T decibel meter sound level reader UT353. Measures from 30 dBA to 130 dBA. +/- 1.5 dBA with 0.1 dBA resolution. User-friendly interface. White backlight and clear LCD screen for easy visibility in dark situations Lightweight & Compact. Easy to carry and store. Ergonomic design. Comfortable grip. 1/2 inch condenser microphone and wind screen foam. Short press HOLD/BL to record or exit data hold. Long press HOLD/BL to turn backlit on or off Customized & Precise. Adjustable sampling time. Press FAST/SLOW to select between fast time of 125 ms and slow time of 1 s. Press Max/Min to switch maximum, minimum, or normal value measurement Versatile & Reliable for personal and company uses. Widely used in noise detection, quality control, health control, environmental noise measurement in factory, industrial, office, home audio, music recording, neighbor noise complaints, speech therapy, etc Power supply: 3 x AAA batteries (not included) Color: Red Material: plastic Package Contents: 1 x Decibel meter 1 x English instruction manual